Advanced method of noncontact measurement of shrouded blade vibration in steam turbine: evaluation of bladed disc mode shape

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F14%3A43923196" target="_blank" >RIV/49777513:23520/14:43923196 - isvavai.cz</a>
Result on the web
<a href="http://www.europment.org/library/2014/prague/bypaper/SCSI/SCSI-05.pdf" target="_blank" >http://www.europment.org/library/2014/prague/bypaper/SCSI/SCSI-05.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Advanced method of noncontact measurement of shrouded blade vibration in steam turbine: evaluation of bladed disc mode shape
Original language description
This paper deals with an advanced method for the evaluation of a bladed disc behavior in terms of the wheel vibration and blade service time consumption. This method is developed as a part of the noncontact vibration monitoring system of the steam turbine shrouded blades. The proposed method utilizes the time- frequency processing (cross spectra) to analyse the data from the optical and magnetoresistive sensors, which are mounted in the stator radially above the rotor blades. Fundamentally, the blade vibrations are detected during the blade passages under the sensors and the following signal processing, which covers also the proposed method, leads to the estimation of the blade residual service life. The prototype system implementing above mentioned techniques was installed into the last stage of the new steam turbine (LP part). The method for bladed disc mode shape evaluation was successfully verified on the signals, which were obtained during the commission operation of the turbine.
Czech name
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Czech description
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Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Computers, Automatic Control, Signal Processing and System Science
ISBN
978-1-61804-233-0
ISSN
1790-5117
e-ISSN
neuvedeno
Number of pages
5
Pages from-to
39-43
Publisher name
Europment
Place of publication
Sofia
Event location
Praha
Event date
Apr 2, 2014
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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